geoff_and_joe_bot.rb

robot3.rb

require 'rrobots'

class Gml_robot
  include Robot

  INIT_SCAN_DEG = 60
  CLOSE_ENOUGH_DEG = 5
  MAX_GUN_TURN_DEG = 30

  def initialize()
    @scan_degrees = INIT_SCAN_DEG 
    @not_seen_count = 0
  end

  def enemy_seen(events)
    ! events['robot_scanned'].empty?
  end

  def fire_if_on_target(events)
    if (enemy_seen(events) && close_enough()) && aimed_at_radar()
      fire(3)
    end
  end

  def tick(events)
    scan_for_enemy(events)
    aim(events) if (close_enough())

    determine_direction()
    accelerate(1) # if (velocity < 2)

    fire_if_on_target(events)
  end

  def determine_direction()
    print("#{x},#{y} of #{battlefield_width},#{battlefield_height}")
    if (x < 100 || battlefield_width - x < 100)
      turn(10) 
    elsif (y < 100 || battlefield_height - y < 100)
      turn(10) 
    end
  end

  def close_enough()
    @scan_degrees.abs <= CLOSE_ENOUGH_DEG
  end

  def scan_for_enemy(events)
    if ! enemy_seen(events)
      print("not seen, scanning #{@scan_degrees}\n")
      @not_seen_count += 1
      if (@not_seen_count > 3)
        @scan_degrees = INIT_SCAN_DEG 
        @not_seen_count = 0
      end
    else
      if (! close_enough)
        @scan_degrees = (@scan_degrees / -2) 
        print("seen, narrowing #{@scan_degrees}\n")
      else
        @scan_degrees = INIT_SCAN_DEG
        print("close_enough, widen again #{@scan_degrees}\n")
      end      
    end
    turn_radar(@scan_degrees)
  end

  def aimed_at_radar()
    (radar_heading - gun_heading).abs <= 10
  end

  def aim(events)
    if (radar_heading - gun_heading).abs > MAX_GUN_TURN_DEG
      turn(radar_heading - gun_heading)
    end
    turn_gun(radar_heading - gun_heading)
  end

end